Electron Configurations and Quantum Numbers

I can determine the electron configuration of an element using quantum numbers and the Aufbau principle.

8:42

We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

1. 1

   The four quantum numbers that describe different atomic orbitals are the principal quantum number (n), the angular momentum quantum number (l), the magnetic quantum number (m sub l), and the spin quantum number (m sub s).

2. 2

   The Aufbau principle tells us the order in which an atom will fill up its orbitals, and Hund's rule says that for electrons of the same energy, you put one electron in each orbital first before doubling them up.

3. 3

   Atoms with unpaired electrons in their orbital diagrams are called paramagnetic and are attracted by a magnetic field, while atoms with all of their electrons paired are diamagnetic and are not affected by a magnetic field.

“What is the electron configuration of oxygen? Show how you arrived at your answer using the Aufbau principle.”

Sample answer included in the free materials